Luc-Michel Six est l'auteur du livre pour les développeurs 4D :

4D v11 SQL: The Missing Manual
Publié en 2007
aux éditions 4D Press.

Luc-Michel is among the developers who know 4D v11 SQL best and I am glad that he is sharing his knowledge, insight and tips in this book. I strongly recommend it to the 4D developer community.
— Laurent Ribardière, Inventor of 4th Dimension
This is an essential guide for developers wishing to master 4D v11 SQL in the fastest possible time. It covers a range of topics, from introductory to advanced, and of course has a wealth of tricks and tips to help you get productive faster. I highly recommend it.
— Brendan Coveney, President and CEO of 4D, Inc
4D v11 SQL - The Missing Manual is a watershed event for the 4D community. A must read for beginning or experienced 4D developers.
— Larry White, Pelican Engineering, Inc